>Submitter-Id: current-users
>Originator: Pietro Cerutti
>Organization:
>Confidential: no
>Synopsis: [patch] sysutils/screen print the PID of a session created in
>"detached" mode
>Severity: non-critical
>Priority: low
>Category: ports
>Class: change-request
>Release: FreeBSD 8.0-CURRENT i386
>Environment:
System: FreeBSD 8.0-CURRENT #18: Tue Dec 18 12:48:22 CET 2007
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/MSI1034
>Description:
The patch below adds the -P option to screen.
This option is only used in conjunction with '-d -m' to print the PID of the
screen session which has been created in "detached" mode.
Example:
> screen -dmP
35532
> screen -list
There is a screen on:
35532..hostname (Detached)
1 Socket in /tmp/screens/S-username.
>How-To-Repeat:
>Fix:
--- _screen.diff begins here ---
--- Makefile.orig 2007-12-22 00:04:19.000000000 +0100
+++ Makefile 2007-12-22 00:04:26.000000000 +0100
@@ -7,7 +7,7 @@
PORTNAME= screen
PORTVERSION= 4.0.3
-PORTREVISION= 1
+PORTREVISION= 2
CATEGORIES= sysutils
MASTER_SITES= ftp://ftp.uni-erlangen.de/pub/utilities/screen/ \
http://komquats.com/distfiles/ \
--- /dev/null 2007-12-22 00:04:29.000000000 +0100
+++ files/patch-screen.c 2007-12-21 23:51:03.000000000 +0100
@@ -0,0 +1,33 @@
+--- screen.c.orig 2007-12-21 23:41:32.000000000 +0100
++++ screen.c 2007-12-21 23:49:26.000000000 +0100
+@@ -340,6 +340,7 @@
+ char *av0;
+ char socknamebuf[2 * MAXSTR];
+ int mflag = 0;
++ int printpid = 0;
+ char *myname = (ac == 0) ? "screen" : av[0];
+ char *SockDir;
+ struct stat st;
+@@ -522,6 +523,9 @@
+ }
+ ap = NULL;
+ break;
++ case 'P': /* print PID */
++ printpid = 1;
++ break;
+ #ifdef HAVE_BRAILLE
+ case 'B':
+ bd.bd_start_braille = 1;
+@@ -1141,8 +1145,11 @@
+ case 0:
+ break;
+ default:
+- if (detached)
++ if (detached) {
++ if (printpid)
++ printf("%d\n", MasterPid);
+ exit(0);
++ }
+ if (SockMatch)
+ sprintf(socknamebuf, "%d.%s", MasterPid, SockMatch);
+ else
--- /dev/null 2007-12-22 00:04:29.000000000 +0100
+++ files/patch-help.c 2007-12-21 23:56:03.000000000 +0100
@@ -0,0 +1,10 @@
+--- help.c.orig 2007-12-21 23:54:57.000000000 +0100
++++ help.c 2007-12-21 23:55:53.000000000 +0100
+@@ -70,6 +70,7 @@
+ printf("-m ignore $STY variable, do create a new screen
session.\n");
+ printf("-O Choose optimal output rather than exact vt100
emulation.\n");
+ printf("-p window Preselect the named window if it exists.\n");
++ printf("-P Print PID of detached screen (when used with -d and
-m).\n");
+ printf("-q Quiet startup. Exits with non-zero return code if
unsuccessful.\n");
+ printf("-r Reattach to a detached screen process.\n");
+ printf("-R Reattach if possible, otherwise start a new
session.\n");
--- /dev/null 2007-12-22 00:04:29.000000000 +0100
+++ files/patch-doc_screen.1 2007-12-21 23:58:30.000000000 +0100
@@ -0,0 +1,15 @@
+--- doc/screen.1.orig 2007-12-21 23:57:50.000000000 +0100
++++ doc/screen.1 2007-12-21 23:57:59.000000000 +0100
+@@ -266,10 +266,10 @@
+ session or not. This flag has a special meaning in connection
+ with the `-d' option:
+ .TP 8
+-.B \-d \-m
++.B \-d \-m (\-P)
+ Start
+ .I screen
+-in \*Qdetached\*U mode. This creates a new session but doesn't
++in \*Qdetached\*U mode (and print the PID of the created session). This
creates a new session but doesn't
+ attach to it. This is useful for system startup scripts.
+ .TP 8
+ .B \-D \-m
--- /dev/null 2007-12-22 00:04:29.000000000 +0100
+++ files/patch-doc_screen.texinfo 2007-12-22 00:00:56.000000000 +0100
@@ -0,0 +1,13 @@
+--- doc/screen.texinfo.orig 2007-12-21 23:58:43.000000000 +0100
++++ doc/screen.texinfo 2007-12-22 00:00:31.000000000 +0100
+@@ -351,6 +351,10 @@
+ selects the blank window. As a special case for reattach, @samp{=}
+ brings up the windowlist on the blank window.
+
[EMAIL PROTECTED] -P
++Print the PID of detached screen. This is meant to be used in
++conjunction with @samp{-d -m}.
++
+ @item -q
+ Suppress printing of error messages. In combination with @samp{-ls} the exit
+ value is set as follows: 9 indicates a directory without sessions. 10
--- _screen.diff ends here ---
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